One of my friends told me that these three institutes must be in this order like; IIIT A>>> NIT Bhopal>= NIT Rourkela. Although he was a student of NIT Rourkela.

He stated that between these three, Rourkela and Bhopal are more or less equal. However, both of these institutes consist of some advantages and disadvantages as well. 

If NIT Bhopal is considered and compared with NIT Rourkela, then it must be said that NIT Bhopal's strength is a large batch size; IT+CSE. But the main advantage of NIT Bhopal is the location and nearby airport transport facilities that conceal all the advantages of this institute. For this reason, NIT Bhopal experiences big recruiters every year, and NIT Rourkela misses this entirely. This is the reason why NIT Bhopal is one step ahead of NIT Rourkela.

However, at NIT Rourkela, M.Tech in Computer Science and Engineering (CSE) is almost similar to doing M.Tech in IITs. But in the case of Bhopal, the students can sit for placements for all the big companies in the campus recruitment process along with B.Tech companies. It will be better to avoid IIIT Allahabad for doing M.Tech in CSE, as placement opportunities in this institute are not good. This thing is that IIIT Allahabad does not allow M.Tech students to attend for placement in the on-campus recruitment process.

Thus, it can be stated that for the B.Tech course, IIIT Allahabad>> NIT Bhopal> NIT Rourkela.

I would say that it is not suitable for those who wish to pursue a career in research. Also, if you are hoping for good placements in any robotics company you will be disappointed. But first, weigh the benefits and drawbacks.

Pros and Cons:

• You will complete two degrees in five years. But you do not need two degrees to get a good job; a B.Tech course is far superior in this case.
• You will have a lot of time to concentrate on the work you want to do.
• You will have the opportunity to study both B.Tech and M.Tech.
• Some companies frequently provide more benefits to M.Tech students. But some will not allow you to sit because they do not accept M.Tech students.
• You will only be paid for a period of ten months. M.Tech students, on the other hand, are paid for 22 months, whereas B.Tech students are paid for the internships they obtain in their final semesters.
• Because of thesis work, M.Tech students are not permitted to participate in any internships during their final year.
• To be successful in robotics, you must be skilled in mechanical, electrical, electronics, and software. Fortunately, the faculty here will be able to guide you in these areas.

Now consider the following factors that make it superior to the standard course:

1. Robotics Faculty: Faculty is really nice here. They are very friendly, cooperative and will guide you in a good direction.
2. Robotics Lab: Once again, one of the best and most prestigious laboratories is at IIIT-A.
3. Nowadays, the majority of students are primarily engaged in simulation and algorithmic projects. As an IT institute, the majority of the topics are confined to algorithms and the software component.
4. On the one hand, B.Tech IT strengthens our coding skills, while M.Tech specialization strengthens our mechanical and electronics sides. That is, a robotics student is a developer, coder, electronics master, and dynamics.
5. Job Security: You have the same job opportunities as any other IT student and can even apply for a position as a professor in any private college. They will pay you more than private businesses.

This institute is the only one of its kind to offer an IT robotics specialization. That means your coding skills will undoubtedly come in handy. Other colleges place a greater emphasis on mechanical and physical aspects. So, if you're an IT enthusiast who enjoys coding robots, this is the institute for you.

The three IIITs mentioned by you, namely IIIT Hyderabad, IIIT Delhi and IIIT Allahabad have no connection with one another. Only IIIT Allahabad is a member of a collective known as the IIITs.Out of the remaining two, IIIT Hyderabad stands for The International Institute of Information Technology Hyderabad, and IIIT Delhi stands for Indraprastha Institute of Information Technology Delhi.

All these three are prestigious institutions and I would disagree that they are underrated. IIIT Hyderabad is very difficult to get into. It has high cutoffs which are at par with some of the top IITs. IIIT Hyderabad is considered as one of the best institutes to study CS. The same is evident through their CS placements, a number of entrants in GSoc, and their participation in competitive programming. As far as IIIT Delhi is concerned, the institution has grown tremendously in the past few years. It has cut offs comparable to NSIT and DTU. 

All these institutes are relatively new and have the tag of “Research Institutes” attached to them. These might be an obstacle to their fame. This is because in India, students choose those institutes that promise the best industrial career prospects and not the ones driven by research.

However, because these institutes are research-driven, the quality of their course content is top notch and they attract some of the best faculty. This also works to increase your overall development and opportunities in the industry. The popularity of these institutions is thus growing rapidly. 

Therefore, all three institutions are really good choices to pursue your higher studies.